#include <BMP085.hh>

Inheritance diagram for BMP085:

Collaboration diagram for BMP085:

Classes
struct	param_t

Public Types
enum	Mode { ULTRA_LOW_POWER = 0, STANDARD = 1, HIGH_RESOLUTION = 2, ULTRA_HIGH_RESOLUTION = 3 }

Public Member Functions
	BMP085 ()

bool	begin (Mode mode=ULTRA_LOW_POWER)

bool	sample_temperature_request ()

bool	read_temperature ()

bool	sample_temperature ()

bool	sample_pressure_request ()

bool	read_pressure ()

bool	sample_pressure ()

bool	sample ()

int16_t	temperature () const

int32_t	pressure () const

Protected Attributes
param_t	m_param

Mode	m_mode

uint8_t	m_cmd

uint16_t	m_start

int32_t	B5

int32_t	m_pressure

Static Protected Attributes
static const uint8_t	TEMP_CONV_MS = 5

static const uint8_t PRESSURE_CONV_MS[]	__PROGMEM

static const uint8_t	COEFF_REG = 0xAA

static const uint8_t	CMD_REG = 0xF4

static const uint8_t	RES_REG = 0xF6

static const uint8_t	TEMP_CONV_CMD = 0x2E

static const uint8_t	PRESSURE_CONV_CMD = 0x34

Private Member Functions
bool	is_async () const

void	sync_request ()

void	async_request ()

virtual void	on_completion (uint8_t type, int count)

Private Attributes
uint8_t	m_addr

bool	m_async

Detailed Description

Cosa TWI driver for Bosch BMP085 Digital pressure sensor

Circuit

The GY-80 10DOF module with pull-up resistors (4K7) for TWI signals and 3V3 internal voltage converter.

                          GY-80
                      +------------+
(VCC)---------------1-|VCC         |
                    2-|3V3         |
(GND)---------------3-|GND         |
(A5/SCL)------------4-|SCL         |
(A4/SDA)------------5-|SDA         |
                    6-|M-DRDY      |
                    7-|A-INT1      |
                    8-|T-INT1      |
                    9-|P-XCLR      |
(Dn/EXTn)----------10-|P-EOC       |
                      +------------+

References

http://media.digikey.com/pdf/Data%20Sheets/Bosch/BMP085.pdf BST-BMP085-DS000-03, Rev. 1.0, 01 July 2008.

Definition at line 54 of file BMP085.hh.

Member Enumeration Documentation

enum BMP085::Mode

Oversampling modes (table, pp. 10).

Enumerator
ULTRA_LOW_POWER
STANDARD
HIGH_RESOLUTION
ULTRA_HIGH_RESOLUTION

Definition at line 59 of file BMP085.hh.

Constructor & Destructor Documentation

BMP085::BMP085 ( )

inline

Construct BMP085 driver with I2C address(0x77) and default ULTRA_LOW_POWER mode.

Definition at line 70 of file BMP085.hh.

Member Function Documentation

bool BMP085::begin ( Mode mode = ULTRA_LOW_POWER )

Initiate device driver. Load calibration coefficients from device. Return true if successful otherwise false.

Parameters

[in] mode oversampling mode (Default ULTRA_LOW_POWER).

Returns: boolean.

Definition at line 34 of file BMP085.cpp.

int32_t BMP085::pressure ( ) const

inline

Return latest calculated pressure from temperature and pressure raw sensor data.

Returns: calculated pressure in steps of 1 Pa (0,01 hPa).

Definition at line 162 of file BMP085.hh.

bool BMP085::read_pressure ( )

Read the raw pressure sensor. Return true(1) if successful otherwise false.

Returns: bool

Definition at line 113 of file BMP085.cpp.

bool BMP085::read_temperature ( )

Read the raw temperature sensor. Will wait for the conversion to complete. Return true(1) if successful otherwise false.

Returns: bool

Definition at line 68 of file BMP085.cpp.

bool BMP085::sample ( )

inline

Sample and read the raw temperature and pressure sensor. Return true(1) if successful otherwise false.

Returns: bool

Definition at line 141 of file BMP085.hh.

bool BMP085::sample_pressure ( )

inline

Sample and read the raw pressure sensor. Return true(1) if successful otherwise false.

Returns: bool

Definition at line 130 of file BMP085.hh.

bool BMP085::sample_pressure_request ( )

Issue a sample request of the raw pressure sensor. Will wait for the conversion to complete. Return true(1) if successful otherwise false.

Returns: bool

Definition at line 96 of file BMP085.cpp.

bool BMP085::sample_temperature ( )

inline

Sample the raw temperature sensor. Return true(1) if successful otherwise false.

Returns: bool

Definition at line 106 of file BMP085.hh.

bool BMP085::sample_temperature_request ( )

Issue a sample raw temperature sensor request. Return true(1) if successful otherwise false.

Returns: bool

Definition at line 51 of file BMP085.cpp.

int16_t BMP085::temperature ( ) const

inline

Calculate temperature from the latest raw sensor reading.

Returns: calculated temperature in steps of 0.1 C

Definition at line 151 of file BMP085.hh.

Member Data Documentation

const uint8_t PRESSURE_CONV_MS [] BMP085::__PROGMEM

staticprotected

Pressure conversion time max table (ms), index with mode.

Definition at line 172 of file BMP085.hh.

int32_t BMP085::B5

protected

Common intermediate temperature factor.

Definition at line 220 of file BMP085.hh.

const uint8_t BMP085::CMD_REG = 0xF4

staticprotected

Command register address.

Definition at line 196 of file BMP085.hh.

const uint8_t BMP085::COEFF_REG = 0xAA

staticprotected

Calibration coefficients register address.

Definition at line 193 of file BMP085.hh.

uint8_t BMP085::m_cmd

protected

Currrent command.

Definition at line 214 of file BMP085.hh.

Mode BMP085::m_mode

protected

Pressure conversion mode.

Definition at line 211 of file BMP085.hh.

param_t BMP085::m_param

protected

Device calibration data.

Definition at line 208 of file BMP085.hh.

int32_t BMP085::m_pressure

protected

Latest calculated pressure.

Definition at line 223 of file BMP085.hh.

uint16_t BMP085::m_start

protected

Sample request start time (ms).

Definition at line 217 of file BMP085.hh.

const uint8_t BMP085::PRESSURE_CONV_CMD = 0x34

staticprotected

Pressure conversion command.

Definition at line 205 of file BMP085.hh.

const uint8_t BMP085::RES_REG = 0xF6

staticprotected

Result register address.

Definition at line 199 of file BMP085.hh.

const uint8_t BMP085::TEMP_CONV_CMD = 0x2E

staticprotected

Temperature conversion command.

Definition at line 202 of file BMP085.hh.

const uint8_t BMP085::TEMP_CONV_MS = 5

staticprotected

Temperature conversion time max (ms).

Definition at line 169 of file BMP085.hh.

The documentation for this class was generated from the following files:

libraries/BMP085/BMP085.hh
libraries/BMP085/BMP085.cpp

Classes

Public Types

Public Member Functions

Protected Attributes

Static Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Circuit

References

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation